/* ═══════════════════════════════════════════════════════════════
   Apple Design System — 统一设计令牌与液态玻璃组件
   Based on Apple Human Interface Guidelines + Design Library Tokens
   Version: 4.0  |  Target: iOS 18 / macOS Sequoia quality

   ⚠ 本文件是全站唯一加载的样式表（各页面 <link> 引入）。
   历史样式表 shared.css / shared-pro.css 的内容已合并进 PART 38–70，
   shared-liquid-glass.css / apple-polish.css 的在用组件已合并进 PART 71–73。
   上述 4 个源文件已于 2026-09-06 删除（无任何页面引用），
   备份见 .workbuddy/dead-css-backup/，仅供溯源查阅，请勿再引入。
   各 PART 标题中的 "Merged from xxx.css" 用于标明代码来源，予以保留。
   ═══════════════════════════════════════════════════════════════ */

/* ═══════════════════════════════════════════════════════════════
   PART 1: PRIMITIVE PALETTE (Apple Design Library)
   ═══════════════════════════════════════════════════════════════ */
:root {
  /* ── Brand (Apple System Blue) ──────────────────────────── */
  --brand-50: #e8f2ff;
  --brand-100: #cfe5ff;
  --brand-200: #9fcbff;
  --brand-300: #66abff;
  --brand-400: #2e8dff;
  --brand-500: #007aff;
  --brand-600: #0064d6;
  --brand-700: #004fad;
  --brand-800: #003b82;
  --brand-900: #00275a;

  /* ── Background ─────────────────────────────────────────── */
  --bg-50: #ffffff;
  --bg-100: #f7f7fa;
  --bg-200: #f2f2f7;
  --bg-300: #e5e5ea;
  --bg-400: #d1d1d6;
  --bg-500: #aeaeb2;
  --bg-600: #8e8e93;
  --bg-700: #3a3a3c;
  --bg-800: #1c1c1e;
  --bg-900: #000000;

  /* ── Text ───────────────────────────────────────────────── */
  --text-50: #f5f5f7;
  --text-100: #e3e3e8;
  --text-200: #c7c7cc;
  --text-300: #aeaeb2;
  --text-400: #8e8e93;
  --text-500: #6e6e73;
  --text-600: #48484a;
  --text-700: #3c3c43;
  --text-800: #1d1d1f;
  --text-900: #000000;

  /* ── System Colors ──────────────────────────────────────── */
  --system-green: #34c759;
  --system-green-dark: #30d158;
  --system-orange: #ff9500;
  --system-orange-dark: #ff9f0a;
  --system-red: #ff3b30;
  --system-red-dark: #ff453a;
  --system-purple: #af52de;
  --system-purple-dark: #bf5af2;
  --system-teal: #5ac8fa;
  --system-indigo: #5856d6;
  --system-indigo-dark: #5e5ce6;

  /* ═══════════════════════════════════════════════════════════
     PART 2: SEMANTIC TOKENS (Light Mode)
     ═══════════════════════════════════════════════════════════ */

  /* ── Core ───────────────────────────────────────────────── */
  --color-bg: var(--bg-200);
  --color-surface: rgba(255, 255, 255, 0.72);
  --color-surface-solid: var(--bg-50);
  --color-surface-elevated: rgba(255, 255, 255, 0.85);
  --color-text: var(--text-800);
  --color-text-secondary: var(--text-500);
  --color-text-light: var(--text-400);

  /* ── Brand / Accent ─────────────────────────────────────── */
  --color-primary: var(--brand-500);
  --color-primary-dark: var(--brand-600);
  --color-primary-light: var(--system-teal);
  --color-primary-accent: var(--brand-500);
  --color-primary-bg: rgba(0, 122, 255, 0.08);
  --color-primary-border: rgba(0, 122, 255, 0.20);
  --color-primary-soft: rgba(0, 122, 255, 0.04);
  --color-primary-glow: rgba(0, 122, 255, 0.30);

  /* ── Semantic ───────────────────────────────────────────── */
  --color-success: var(--system-green);
  --color-success-bg: rgba(52, 199, 89, 0.10);
  --color-success-border: rgba(52, 199, 89, 0.25);
  --color-warning: var(--system-orange);
  --color-warning-bg: rgba(255, 149, 0, 0.10);
  --color-warning-border: rgba(255, 149, 0, 0.25);
  --color-danger: var(--system-red);
  --color-danger-bg: rgba(255, 59, 48, 0.10);
  --color-danger-border: rgba(255, 59, 48, 0.25);
  --color-info: var(--brand-500);
  --color-info-bg: rgba(0, 122, 255, 0.10);
  --color-purple: var(--system-purple);
  --color-purple-bg: rgba(175, 82, 222, 0.10);

  /* ── Borders & Separators ───────────────────────────────── */
  --color-border: rgba(60, 60, 67, 0.12);
  --color-border-light: rgba(60, 60, 67, 0.08);
  --color-separator: rgba(60, 60, 67, 0.18);

  /* ── Icon ───────────────────────────────────────────────── */
  --color-icon: var(--text-800);
  --color-icon-muted: var(--text-500);

  /* ═══════════════════════════════════════════════════════════
     PART 3: LIQUID GLASS MATERIAL (visionOS / macOS Sequoia)
     ═══════════════════════════════════════════════════════════ */

  /* ── Glass Surfaces ─────────────────────────────────────── */
  --glass-bg: rgba(255, 255, 255, 0.48);
  --glass-bg-strong: rgba(255, 255, 255, 0.64);
  --glass-bg-weak: rgba(255, 255, 255, 0.32);
  --glass-blur: blur(40px) saturate(180%);
  --glass-blur-strong: blur(60px) saturate(200%);
  --glass-blur-weak: blur(20px) saturate(150%);
  --glass-border: 1px solid rgba(255, 255, 255, 0.55);
  --glass-border-inner: 1px solid rgba(255, 255, 255, 0.30);
  --glass-highlight: linear-gradient(135deg, rgba(255,255,255,0.55) 0%, rgba(255,255,255,0.15) 40%, transparent 60%);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.06), 0 2px 8px rgba(0, 0, 0, 0.03);
  --glass-shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.10), 0 4px 16px rgba(0, 0, 0, 0.05);
  --glass-shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.04);
  --glass-inner-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85), inset 0 -1px 0 rgba(255, 255, 255, 0.20);

  /* ═══════════════════════════════════════════════════════════
     PART 4: SHADOWS (Apple Design Library)
     ═══════════════════════════════════════════════════════════ */
  --shadow-2xs: 0 1px 2px -1px rgba(0, 0, 0, 0.04);
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05), 0 1px 3px -1px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 8px -2px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 8px 24px -8px rgba(0, 0, 0, 0.08), 0 4px 8px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 16px 40px -10px rgba(0, 0, 0, 0.10), 0 8px 16px -8px rgba(0, 0, 0, 0.06);
  --shadow-2xl: 0 24px 64px -12px rgba(0, 0, 0, 0.12);
  --shadow-primary: 0 8px 24px rgba(0, 122, 255, 0.25), 0 2px 8px rgba(0, 122, 255, 0.15);
  --shadow-primary-sm: 0 4px 12px rgba(0, 122, 255, 0.20);

  /* ═══════════════════════════════════════════════════════════
     PART 5: RADIUS (Apple Continuous Corners)
     ═══════════════════════════════════════════════════════════ */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 26px;
  --radius-2xl: 34px;
  --radius-full: 9999px;

  /* ═══════════════════════════════════════════════════════════
     PART 6: TYPOGRAPHY (Apple Design Library)
     ═══════════════════════════════════════════════════════════ */
  --font-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'PingFang SC', 'Noto Sans SC', 'Helvetica Neue', 'Microsoft YaHei', Inter, sans-serif;
  --font-display: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'PingFang SC', 'Noto Serif SC', serif;
  --font-mono: 'SF Mono', 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace;
  --tracking-tight: -0.022em;
  --tracking-normal: -0.01em;
  --tracking-wide: 0.02em;

  /* ═══════════════════════════════════════════════════════════
     PART 7: SPACING (Apple 8px grid)
     ═══════════════════════════════════════════════════════════ */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* ═══════════════════════════════════════════════════════════
     PART 8: ANIMATION (Apple Spring Physics)
     ═══════════════════════════════════════════════════════════ */
  --transition-fast: 200ms cubic-bezier(0.25, 0.1, 0.25, 1);
  --transition-smooth: 400ms cubic-bezier(0.25, 0.1, 0.25, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-elastic: 600ms cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* ═══════════════════════════════════════════════════════════════
   PART 9: DARK MODE
   ═══════════════════════════════════════════════════════════════ */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: var(--bg-900);
    --color-surface: rgba(28, 28, 30, 0.72);
    --color-surface-solid: var(--bg-800);
    --color-surface-elevated: rgba(44, 44, 46, 0.85);
    --color-text: var(--text-50);
    --color-text-secondary: var(--text-300);
    --color-text-light: var(--text-400);

    --color-primary: var(--brand-400);
    --color-primary-dark: var(--brand-300);
    --color-primary-bg: rgba(10, 132, 255, 0.15);
    --color-primary-border: rgba(10, 132, 255, 0.30);
    --color-primary-soft: rgba(10, 132, 255, 0.08);
    --color-primary-glow: rgba(10, 132, 255, 0.40);

    --color-success: var(--system-green-dark);
    --color-success-bg: rgba(48, 209, 88, 0.12);
    --color-warning: var(--system-orange-dark);
    --color-warning-bg: rgba(255, 159, 10, 0.12);
    --color-danger: var(--system-red-dark);
    --color-danger-bg: rgba(255, 69, 58, 0.12);
    --color-purple: var(--system-purple-dark);

    --color-border: rgba(255, 255, 255, 0.12);
    --color-border-light: rgba(255, 255, 255, 0.08);
    --color-separator: rgba(255, 255, 255, 0.15);

    --color-icon: var(--text-50);
    --color-icon-muted: var(--text-400);

    --glass-bg: rgba(44, 44, 46, 0.60);
    --glass-bg-strong: rgba(58, 58, 60, 0.75);
    --glass-bg-weak: rgba(28, 28, 30, 0.45);
    --glass-border: 1px solid rgba(255, 255, 255, 0.10);
    --glass-border-inner: 1px solid rgba(255, 255, 255, 0.06);
    --glass-highlight: linear-gradient(135deg, rgba(255,255,255,0.10) 0%, rgba(255,255,255,0.03) 40%, transparent 60%);
    --glass-inner-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), inset 0 -1px 0 rgba(0, 0, 0, 0.20);

    --shadow-2xs: 0 1px 2px -1px rgba(0, 0, 0, 0.30);
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.30);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.36), 0 1px 3px -1px rgba(0, 0, 0, 0.36);
    --shadow-md: 0 4px 8px -2px rgba(0, 0, 0, 0.44), 0 2px 4px -2px rgba(0, 0, 0, 0.36);
    --shadow-lg: 0 8px 24px -8px rgba(0, 0, 0, 0.50), 0 4px 8px -4px rgba(0, 0, 0, 0.40);
    --shadow-xl: 0 16px 40px -10px rgba(0, 0, 0, 0.55), 0 8px 16px -8px rgba(0, 0, 0, 0.44);
    --shadow-2xl: 0 24px 64px -12px rgba(0, 0, 0, 0.60);
    --shadow-primary: 0 8px 24px rgba(10, 132, 255, 0.35);
    --shadow-primary-sm: 0 4px 12px rgba(10, 132, 255, 0.28);
  }
}

/* Explicit dark mode class (toggle) */
body.dark-mode {
  --color-bg: var(--bg-900);
  --color-surface: rgba(28, 28, 30, 0.72);
  --color-surface-solid: var(--bg-800);
  --color-surface-elevated: rgba(44, 44, 46, 0.85);
  --color-text: var(--text-50);
  --color-text-secondary: var(--text-300);
  --color-text-light: var(--text-400);
  --color-primary: var(--brand-400);
  --color-primary-bg: rgba(10, 132, 255, 0.15);
  --color-primary-border: rgba(10, 132, 255, 0.30);
  --color-success: var(--system-green-dark);
  --color-warning: var(--system-orange-dark);
  --color-danger: var(--system-red-dark);
  --color-border: rgba(255, 255, 255, 0.12);
  --color-border-light: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(44, 44, 46, 0.60);
  --glass-bg-strong: rgba(58, 58, 60, 0.75);
  --glass-bg-weak: rgba(28, 28, 30, 0.45);
  --glass-border: 1px solid rgba(255, 255, 255, 0.10);
  --glass-inner-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), inset 0 -1px 0 rgba(0, 0, 0, 0.20);
}

/* ═══════════════════════════════════════════════════════════════
   PART 10: GLOBAL RESET & BASE
   ═══════════════════════════════════════════════════════════════ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 20px;
  line-height: 1.55;
  letter-spacing: var(--tracking-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  font-feature-settings: "kern", "liga", "calt";
}

/* ── Dynamic Background Canvas (Apple Style) ──────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 80% 60% at 10% 20%, rgba(0, 122, 255, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 90% 80%, rgba(175, 82, 222, 0.10) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 50% 50%, rgba(90, 200, 250, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 70% 50% at 20% 90%, rgba(52, 199, 89, 0.07) 0%, transparent 50%),
    radial-gradient(ellipse 40% 30% at 80% 15%, rgba(255, 149, 0, 0.06) 0%, transparent 50%),
    linear-gradient(180deg, #F2F2F7 0%, #E8E8F0 50%, #F0F0F7 100%);
  background-attachment: fixed;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.02'/%3E%3C/svg%3E");
  pointer-events: none;
  mix-blend-mode: overlay;
  opacity: 0.35;
}

@media (prefers-color-scheme: dark) {
  body::before {
    background:
      radial-gradient(ellipse 80% 60% at 10% 20%, rgba(10, 132, 255, 0.15) 0%, transparent 60%),
      radial-gradient(ellipse 60% 50% at 90% 80%, rgba(175, 82, 222, 0.10) 0%, transparent 55%),
      radial-gradient(ellipse 50% 40% at 50% 50%, rgba(90, 200, 250, 0.06) 0%, transparent 50%),
      #000;
  }
}

/* ═══════════════════════════════════════════════════════════════
   PART 11: TYPOGRAPHY
   ═══════════════════════════════════════════════════════════════ */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-primary-dark); }

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-feature-settings: "kern", "liga";
}
h1 { font-size: clamp(1.75rem, 4.5vw, 2.5rem); font-weight: 800; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.375rem, 3vw, 1.875rem); font-weight: 700; }
h3 { font-size: clamp(1.125rem, 2vw, 1.5rem); font-weight: 600; }
h4 { font-size: 1.125rem; font-weight: 600; }
h5 { font-size: 1rem; font-weight: 600; }

p { margin-bottom: 0.75em; }

::selection { background: rgba(0, 122, 255, 0.20); color: var(--color-primary-dark); }
::-moz-selection { background: rgba(0, 122, 255, 0.20); }

/* ── Scrollbar (Apple Style) ──────────────────────────────── */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(142, 142, 147, 0.35);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: rgba(142, 142, 147, 0.55); }

/* ═══════════════════════════════════════════════════════════════
   PART 12: BUTTONS (Liquid Glass)
   ═══════════════════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 0.875rem 1.5rem;
  border: none;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: all var(--transition-fast);
  line-height: 1.4;
  min-height: 48px;
  touch-action: manipulation;
  user-select: none;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-primary-sm), inset 0 1px 0 rgba(255,255,255,0.20);
  -webkit-tap-highlight-color: transparent;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.22), rgba(255,255,255,0) 50%);
  opacity: 1;
  pointer-events: none;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.0), rgba(0,0,0,0.12));
  opacity: 0;
  transition: opacity var(--transition-fast);
  pointer-events: none;
}

.btn:hover {
  transform: translateY(-1px) scale(1.01);
  box-shadow: var(--shadow-primary), inset 0 1px 0 rgba(255,255,255,0.25);
}
.btn:hover::after { opacity: 1; }

.btn:active {
  transform: translateY(0) scale(0.98);
  box-shadow: var(--shadow-primary-sm), inset 0 2px 4px rgba(0,0,0,0.15);
  transition-duration: 80ms;
}

.btn:focus-visible {
  outline: 3px solid rgba(0, 122, 255, 0.50);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

.btn.loading { color: transparent !important; pointer-events: none; }
.btn.loading::after {
  content: '';
  position: absolute;
  width: 20px; height: 20px;
  border: 2.5px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  opacity: 1;
  background: none;
}
@keyframes spin { to { transform: rotate(360deg); } }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 0.75rem 1.375rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 44px;
  touch-action: manipulation;
  user-select: none;
  box-shadow: var(--glass-shadow-sm), var(--glass-inner-shadow);
  position: relative;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}
.btn-secondary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--glass-highlight);
  pointer-events: none;
  border-radius: inherit;
}
.btn-secondary:hover {
  border-color: var(--color-primary-border);
  color: var(--color-primary);
  background: var(--color-primary-bg);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md), var(--glass-inner-shadow);
}
.btn-secondary:active { transform: translateY(0) scale(0.98); }
.btn-secondary:focus-visible { outline: 3px solid rgba(0, 122, 255, 0.40); outline-offset: 2px; }
.btn-secondary:disabled { opacity: 0.45; cursor: not-allowed; transform: none !important; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-text-secondary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 36px;
}
.btn-ghost:hover {
  background: rgba(0, 122, 255, 0.08);
  color: var(--color-primary);
}

.btn-success { background: var(--color-success); box-shadow: 0 4px 12px rgba(52,199,89,0.25), inset 0 1px 0 rgba(255,255,255,0.20); }
.btn-success:hover { box-shadow: 0 8px 20px rgba(52,199,89,0.30), inset 0 1px 0 rgba(255,255,255,0.25); }
.btn-danger { background: var(--color-danger); box-shadow: 0 4px 12px rgba(255,59,48,0.25), inset 0 1px 0 rgba(255,255,255,0.20); }
.btn-danger:hover { box-shadow: 0 8px 20px rgba(255,59,48,0.30), inset 0 1px 0 rgba(255,255,255,0.25); }

.btn-sm { min-height: 36px; padding: 0.5rem 1rem; font-size: 0.8125rem; border-radius: var(--radius-sm); }
.btn-lg { min-height: 56px; padding: 1rem 2rem; font-size: 1rem; border-radius: var(--radius-lg); }
.btn-pill { border-radius: var(--radius-full); }
.btn-icon {
  width: 40px; height: 40px;
  min-height: 40px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* ═══════════════════════════════════════════════════════════════
   PART 13: FORM CONTROLS (Liquid Glass)
   ═══════════════════════════════════════════════════════════════ */
input, select, textarea {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.60);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--color-text);
  transition: all var(--transition-fast);
  outline: none;
  width: 100%;
  line-height: 1.5;
  -webkit-appearance: none;
  appearance: none;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.03);
}

@media (prefers-color-scheme: dark) {
  input, select, textarea {
    background: rgba(28, 28, 30, 0.60);
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.15);
  }
}

input:hover:not(:focus):not(:disabled),
select:hover:not(:focus):not(:disabled),
textarea:hover:not(:focus):not(:disabled) {
  border-color: var(--color-text-light);
  background: rgba(255, 255, 255, 0.75);
}

input:focus, select:focus, textarea:focus {
  border-color: var(--color-primary);
  background: rgba(255, 255, 255, 0.90);
  box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.12), inset 0 1px 2px rgba(0,0,0,0.03);
}

input[type="number"] {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
  -moz-appearance: textfield;
}
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

input[type="radio"], input[type="checkbox"] {
  width: 20px; height: 20px;
  min-height: 20px;
  padding: 0;
  margin: 0;
  accent-color: var(--color-primary);
  cursor: pointer;
  border-radius: 50%;
  box-shadow: none;
  backdrop-filter: none;
  background: #fff;
}
input[type="checkbox"] { border-radius: 6px; }

label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  display: block;
  margin-bottom: 6px;
  letter-spacing: 0;
}
label.required::after { content: ' *'; color: var(--color-danger); font-weight: 700; }

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='none' stroke='%236E6E73' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' d='M3 4.5L6 7.5L9 4.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}

.form-group { margin-bottom: 20px; }
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

/* ═══════════════════════════════════════════════════════════════
   PART 14: CARDS (Liquid Glass)
   ═══════════════════════════════════════════════════════════════ */
.card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: var(--glass-shadow), var(--glass-inner-shadow);
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--glass-highlight);
  pointer-events: none;
  border-radius: inherit;
  z-index: 0;
}
.card > * { position: relative; z-index: 1; }
.card.interactive { cursor: pointer; }
.card.interactive:hover {
  transform: translateY(-3px);
  box-shadow: var(--glass-shadow-lg), var(--glass-border), var(--glass-inner-shadow);
  border-color: rgba(255, 255, 255, 0.70);
}
.card.interactive:active {
  transform: translateY(-1px) scale(0.995);
  transition-duration: 100ms;
}

.card-solid {
  background: var(--color-surface-solid);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

/* ═══════════════════════════════════════════════════════════════
   PART 15: RESULT SECTION
   ═══════════════════════════════════════════════════════════════ */
.result-section {
  display: none;
  margin-top: 24px;
  padding: 28px;
  background: var(--glass-bg-strong);
  backdrop-filter: var(--glass-blur-strong);
  -webkit-backdrop-filter: var(--glass-blur-strong);
  border-radius: var(--radius-xl);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow-lg), var(--glass-inner-shadow);
  position: relative;
  overflow: hidden;
}
.result-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--glass-highlight);
  pointer-events: none;
}
.result-section > * { position: relative; z-index: 1; }
.result-section.show {
  display: block;
  animation: fadeUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* ═══════════════════════════════════════════════════════════════
   PART 16: NOTICES & DISCLAIMERS
   ═══════════════════════════════════════════════════════════════ */
.disclaimer, .notice {
  margin-top: 16px;
  padding: 14px 18px;
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  border-left: 4px solid var(--color-warning);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  backdrop-filter: blur(10px);
}
.disclaimer i, .notice i { color: var(--color-warning); margin-right: 8px; }

.notice-info {
  background: var(--color-info-bg);
  border-color: var(--color-primary-border);
  border-left-color: var(--color-primary);
}
.notice-info i { color: var(--color-primary); }

.notice-danger {
  background: var(--color-danger-bg);
  border-color: var(--color-danger-border);
  border-left-color: var(--color-danger);
}
.notice-danger i { color: var(--color-danger); }

.notice-success {
  background: var(--color-success-bg);
  border-color: var(--color-success-border);
  border-left-color: var(--color-success);
}
.notice-success i { color: var(--color-success); }

/* ═══════════════════════════════════════════════════════════════
   PART 17: PAGE HEADER (Sub-page, Sticky)
   ═══════════════════════════════════════════════════════════════ */
.page-header {
  width: 100%;
  max-width: 1200px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  margin-bottom: 24px;
  background: var(--glass-bg-strong);
  backdrop-filter: var(--glass-blur-strong);
  -webkit-backdrop-filter: var(--glass-blur-strong);
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow), var(--glass-inner-shadow);
  border: var(--glass-border);
  gap: 16px;
  flex-wrap: wrap;
  position: sticky;
  top: 12px;
  z-index: 100;
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--glass-highlight);
  border-radius: inherit;
  pointer-events: none;
}
.page-header > * { position: relative; z-index: 1; }

.page-header-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
  flex: 1;
  min-width: 0;
}
.page-header-title i {
  width: 36px; height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-primary-bg);
  color: var(--color-primary);
  font-size: 1rem;
  flex-shrink: 0;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.5);
}

.page-header-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-shrink: 0;
}
.page-header-actions .btn,
.page-header-actions .btn-secondary {
  width: auto;
  min-height: 38px;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
}

/* ═══════════════════════════════════════════════════════════════
   PART 18: BACK BUTTON
   ═══════════════════════════════════════════════════════════════ */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  box-shadow: var(--glass-shadow-sm), var(--glass-inner-shadow);
}
.back-btn:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-color: var(--color-primary-border);
  transform: translateX(-2px);
}

/* ═══════════════════════════════════════════════════════════════
   PART 19: TABS (Scroll / Pill)
   ═══════════════════════════════════════════════════════════════ */
.tabs-scroll {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-snap-type: x mandatory;
  padding: 6px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow-sm), var(--glass-inner-shadow);
  border: var(--glass-border);
  max-width: 1200px;
  width: 100%;
}
.tabs-scroll::-webkit-scrollbar { display: none; }
.tabs-scroll .tab {
  flex: 0 0 auto;
  min-width: 100px;
  scroll-snap-align: start;
  padding: 10px 18px;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}
.tabs-scroll .tab:hover {
  color: var(--color-primary);
  background: rgba(0, 122, 255, 0.08);
}
.tabs-scroll .tab.on {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-primary-sm), inset 0 1px 0 rgba(255,255,255,0.20);
  font-weight: 600;
}

/* ═══════════════════════════════════════════════════════════════
   PART 20: BADGE / TAG
   ═══════════════════════════════════════════════════════════════ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border: 1px solid var(--color-primary-border);
}
.badge-success { background: var(--color-success-bg); color: var(--color-success); border-color: var(--color-success-border); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); border-color: var(--color-warning-border); }
.badge-danger { background: var(--color-danger-bg); color: var(--color-danger); border-color: var(--color-danger-border); }
.badge-neutral { background: rgba(142,142,147,0.10); color: var(--color-text-secondary); border-color: var(--color-border); }

/* ═══════════════════════════════════════════════════════════════
   PART 21: VALUE DISPLAY
   ═══════════════════════════════════════════════════════════════ */
.value-display {
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.03em;
  font-feature-settings: "tnum", "lnum";
}
.value-display.lg { font-size: clamp(2rem, 5vw, 2.75rem); line-height: 1.1; }
.value-display.xl { font-size: clamp(2.5rem, 7vw, 3.75rem); line-height: 1.05; }
.value-display.primary { color: var(--color-primary); }
.value-display.success { color: var(--color-success); }
.value-display.warning { color: var(--color-warning); }
.value-display.danger { color: var(--color-danger); }

/* ═══════════════════════════════════════════════════════════════
   PART 22: TABLE
   ═══════════════════════════════════════════════════════════════ */
.lg-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: var(--glass-border);
  box-shadow: var(--glass-shadow), var(--glass-inner-shadow);
}
.lg-table th, .lg-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.875rem;
}
.lg-table th {
  background: rgba(255,255,255,0.30);
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.lg-table tr:last-child td { border-bottom: none; }
.lg-table tr:hover td { background: rgba(0, 122, 255, 0.04); }

/* ═══════════════════════════════════════════════════════════════
   PART 23: TOAST
   ═══════════════════════════════════════════════════════════════ */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: min(400px, calc(100vw - 40px));
}
.toast {
  padding: 14px 20px;
  border-radius: var(--radius-lg);
  background: var(--glass-bg-strong);
  backdrop-filter: var(--glass-blur-strong);
  -webkit-backdrop-filter: var(--glass-blur-strong);
  color: var(--color-text);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg), var(--glass-border), var(--glass-inner-shadow);
  animation: toastIn 0.4s var(--transition-spring) both;
  display: flex;
  align-items: center;
  gap: 10px;
  border: var(--glass-border);
}
.toast.error { border-left: 3px solid var(--color-danger); }
.toast.success { border-left: 3px solid var(--color-success); }
.toast.warning { border-left: 3px solid var(--color-warning); }
.toast.info { border-left: 3px solid var(--color-primary); }
.toast i { font-size: 1.125rem; flex-shrink: 0; }
.toast.error i { color: var(--color-danger); }
.toast.success i { color: var(--color-success); }
.toast.warning i { color: var(--color-warning); }
.toast.info i { color: var(--color-primary); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(30px) scale(0.92); }
  to { opacity: 1; transform: translateX(0) scale(1); }
}
@keyframes toastOut {
  to { opacity: 0; transform: translateX(30px) scale(0.92); }
}

/* ═══════════════════════════════════════════════════════════════
   PART 24: SCROLL TO TOP
   ═══════════════════════════════════════════════════════════════ */
.scroll-top-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 48px; height: 48px;
  border-radius: var(--radius-full);
  background: var(--glass-bg-strong);
  backdrop-filter: var(--glass-blur-strong);
  -webkit-backdrop-filter: var(--glass-blur-strong);
  border: var(--glass-border);
  box-shadow: var(--shadow-md), var(--glass-inner-shadow);
  color: var(--color-primary);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(20px) scale(0.9);
  transition: all var(--transition-spring);
  z-index: 999;
}
.scroll-top-btn.visible { opacity: 1; transform: translateY(0) scale(1); }
.scroll-top-btn:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--shadow-lg), var(--glass-inner-shadow);
}
.scroll-top-btn:active { transform: translateY(0) scale(0.95); }

/* ═══════════════════════════════════════════════════════════════
   PART 25: SEGMENTED CONTROL (Apple Style)
   ═══════════════════════════════════════════════════════════════ */
.segmented {
  display: inline-flex;
  padding: 3px;
  background: rgba(120,120,128,0.12);
  border-radius: var(--radius-sm);
  gap: 2px;
}
.segmented button {
  padding: 6px 14px;
  border: none;
  border-radius: 7px;
  background: transparent;
  color: var(--color-text);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
}
.segmented button.on {
  background: var(--color-surface-solid);
  box-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.05);
  font-weight: 600;
}

/* ═══════════════════════════════════════════════════════════════
   PART 26: MODAL / DIALOG
   ═══════════════════════════════════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}
.modal-content {
  background: var(--glass-bg-strong);
  backdrop-filter: var(--glass-blur-strong);
  -webkit-backdrop-filter: var(--glass-blur-strong);
  border: var(--glass-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl), var(--glass-inner-shadow);
  padding: 32px;
  max-width: 520px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  animation: scaleIn 0.4s var(--transition-spring);
  position: relative;
}
.modal-content::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--glass-highlight);
  border-radius: inherit;
  pointer-events: none;
}
.modal-content > * { position: relative; z-index: 1; }

/* ═══════════════════════════════════════════════════════════════
   PART 27: STEP INDICATOR
   ═══════════════════════════════════════════════════════════════ */
.step-indicator {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 24px;
}
.step-item {
  display: flex;
  align-items: center;
  flex: 1;
}
.step-dot {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 2px solid var(--color-border);
  color: var(--color-text-light);
  font-size: 0.8125rem;
  font-weight: 700;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}
.step-item.active .step-dot {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-primary-sm);
}
.step-item.done .step-dot {
  background: var(--color-success);
  border-color: var(--color-success);
  color: #fff;
}
.step-line {
  flex: 1;
  height: 2px;
  background: var(--color-border);
  margin: 0 8px;
  border-radius: 2px;
}
.step-item.done .step-line { background: var(--color-success); }
.step-label {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-top: 6px;
  text-align: center;
}
.step-item.active .step-label { color: var(--color-primary); font-weight: 600; }
.step-item.done .step-label { color: var(--color-success); }

/* ═══════════════════════════════════════════════════════════════
   PART 28: SKELETON LOADING
   ═══════════════════════════════════════════════════════════════ */
@keyframes skeletonShimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
.skeleton {
  display: block;
  background: linear-gradient(90deg, var(--color-border-light) 25%, rgba(142,142,147,0.08) 50%, var(--color-border-light) 75%);
  background-size: 200% 100%;
  animation: skeletonShimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
  min-height: 1em;
}

/* ═══════════════════════════════════════════════════════════════
   PART 29: EMPTY STATE
   ═══════════════════════════════════════════════════════════════ */
.empty-state {
  padding: 56px 24px;
  text-align: center;
  color: var(--color-text-light);
}
.empty-state-icon {
  font-size: 3.5rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
  display: inline-block;
  opacity: 0.5;
}
.empty-state-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}
.empty-state-desc {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.6;
  max-width: 360px;
  margin: 0 auto;
}

/* ═══════════════════════════════════════════════════════════════
   PART 30: ANIMATIONS
   ═══════════════════════════════════════════════════════════════ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideRight { from { opacity: 0; transform: translateX(-20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.55; } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes ripple {
  from { transform: scale(0); opacity: 0.5; }
  to { transform: scale(4); opacity: 0; }
}

.animate-fade-up { animation: fadeUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) both; }
.animate-fade-in { animation: fadeIn 0.3s ease both; }
.animate-scale-in { animation: scaleIn 0.4s var(--transition-spring) both; }
.animate-slide-up { animation: slideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) both; }

.stagger-children > * { animation: fadeUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) both; }
.stagger-children > *:nth-child(1) { animation-delay: 0ms; }
.stagger-children > *:nth-child(2) { animation-delay: 60ms; }
.stagger-children > *:nth-child(3) { animation-delay: 120ms; }
.stagger-children > *:nth-child(4) { animation-delay: 180ms; }
.stagger-children > *:nth-child(5) { animation-delay: 240ms; }
.stagger-children > *:nth-child(6) { animation-delay: 300ms; }
.stagger-children > *:nth-child(7) { animation-delay: 360ms; }
.stagger-children > *:nth-child(8) { animation-delay: 420ms; }

/* ═══════════════════════════════════════════════════════════════
   PART 31: DIVIDER
   ═══════════════════════════════════════════════════════════════ */
hr, .divider {
  border: 0;
  border-top: 1px solid var(--color-separator);
  margin: 24px 0;
}

/* ═══════════════════════════════════════════════════════════════
   PART 32: TOOLTIP
   ═══════════════════════════════════════════════════════════════ */
[data-tooltip] { position: relative; }
[data-tooltip]:hover::after,
[data-tooltip]:focus::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 14px;
  background: rgba(28, 28, 30, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  animation: fadeIn 0.15s ease;
  pointer-events: none;
}

/* ═══════════════════════════════════════════════════════════════
   PART 33: FOCUS RING (A11y)
   ═══════════════════════════════════════════════════════════════ */
:focus-visible {
  outline: 3px solid rgba(0, 122, 255, 0.45);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

/* ═══════════════════════════════════════════════════════════════
   PART 34: SKIP LINK (A11y)
   ═══════════════════════════════════════════════════════════════ */
.skip-link {
  position: absolute;
  top: -100px;
  left: 12px;
  z-index: 100000;
  padding: 10px 20px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: top var(--transition-fast);
  box-shadow: var(--shadow-lg);
}
.skip-link:focus { top: 12px; color: #fff; }

/* ═══════════════════════════════════════════════════════════════
   PART 35: RESPONSIVE BREAKPOINTS
   ═══════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  body { padding: 24px 16px; }
  .page-header { padding: 12px 16px; }
  .card { padding: 24px; border-radius: var(--radius-lg); }
  .result-section { padding: 24px; border-radius: var(--radius-lg); }
}

@media (max-width: 768px) {
  body { padding: 16px 12px; }
  .card { padding: 20px; border-radius: var(--radius-lg); }
  .result-section { padding: 20px; margin-top: 20px; }
  .page-header {
    padding: 12px 14px;
    margin-bottom: 16px;
    border-radius: var(--radius-lg);
    position: static;
  }
  .page-header-title { font-size: 1rem; gap: 10px; }
  .page-header-title i { width: 32px; height: 32px; font-size: 0.875rem; border-radius: var(--radius-sm); }
  .page-header-actions .btn,
  .page-header-actions .btn-secondary {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
  }
  .tabs-scroll { gap: 4px; padding: 4px; border-radius: var(--radius-lg); }
  .tabs-scroll .tab { min-width: 88px; padding: 8px 12px; font-size: 0.8125rem; border-radius: var(--radius-sm); }
  .form-row { grid-template-columns: 1fr; gap: 12px; }
  .toast-container { right: 12px; left: 12px; max-width: none; }
  .modal-content { padding: 24px; border-radius: var(--radius-xl); }
  .scroll-top-btn { bottom: 16px; right: 16px; width: 44px; height: 44px; }
}

@media (max-width: 480px) {
  body { padding: 12px 8px; }
  .card { padding: 16px; border-radius: var(--radius-md); }
  .result-section { padding: 16px; border-radius: var(--radius-md); }
  .page-header {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 12px;
  }
  .page-header-actions { justify-content: stretch; }
  .page-header-actions .btn,
  .page-header-actions .btn-secondary { flex: 1; }
  .page-header-title i { width: 30px; height: 30px; }
  .tabs-scroll .tab { min-width: 76px; padding: 8px 10px; font-size: 0.75rem; gap: 4px; }
  .tabs-scroll .tab i { font-size: 0.75rem; }
  .btn { min-height: 46px; font-size: 0.875rem; padding: 0.75rem 1.25rem; }
  .btn-lg { min-height: 52px; }
  h1 { font-size: 1.625rem; }
  h2 { font-size: 1.25rem; }
  .value-display.lg { font-size: 1.875rem; }
  .value-display.xl { font-size: 2.25rem; }
  input, select, textarea { font-size: 16px; min-height: 44px; }
}

/* ── Touch-friendly ──────────────────────────────────────── */
@media (pointer: coarse) {
  .btn, .btn-secondary, .btn-ghost,
  .tab, .nav-item,
  input[type="radio"], input[type="checkbox"],
  select, button {
    min-height: 44px;
  }
  .nav-item { padding: 14px 20px; }
}

/* ── Safe Area Insets ────────────────────────────────────── */
@supports (padding-top: env(safe-area-inset-top)) {
  body {
    padding-left: calc(20px + env(safe-area-inset-left));
    padding-right: calc(20px + env(safe-area-inset-right));
    padding-bottom: calc(40px + env(safe-area-inset-bottom));
  }
}

/* ═══════════════════════════════════════════════════════════════
   PART 36: PRINT STYLES
   ═══════════════════════════════════════════════════════════════ */
@media print {
  body {
    background: #fff !important;
    color: #000 !important;
    padding: 0 !important;
    display: block !important;
  }
  body::before, body::after { display: none !important; }
  .page-header, .toast-container, .no-print,
  .btn, .btn-secondary, .btn-ghost,
  .scroll-top-btn, .skip-link, .back-btn,
  [data-tooltip]::before, [data-tooltip]::after {
    display: none !important;
  }
  .card, .result-section {
    box-shadow: none !important;
    border: 1px solid #ccc !important;
    background: #fff !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    page-break-inside: avoid;
    break-inside: avoid;
  }
  h1, h2, h3 { color: #000 !important; page-break-after: avoid; }
  .value-display { color: #000 !important; }
  a { color: #000 !important; text-decoration: underline; }
  @page { margin: 1.5cm; }
}

/* ═══════════════════════════════════════════════════════════════
   PART 37: REDUCED MOTION
   ═══════════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ═══════════════════════════════════════════════════════════════
   PART 38: NUMBER INPUT STEPPER (Merged from shared.css)
   ═══════════════════════════════════════════════════════════════ */
.number-input-group {
  position: relative;
  display: flex;
  align-items: center;
}
.number-input-group input {
  padding-right: 48px;
  text-align: right;
  font-size: 1.0625rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.number-input-group .stepper {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 2px;
  width: 34px;
  height: calc(100% - 10px);
}
.number-input-group .stepper button {
  flex: 1;
  width: 100%;
  border: none;
  background: rgba(0,0,0,0.04);
  backdrop-filter: blur(8px);
  color: var(--color-text-secondary);
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  transition: all 150ms ease;
  padding: 0;
}
.number-input-group .stepper button:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}
.number-input-group .stepper button:active {
  transform: scale(0.9);
  background: var(--color-primary);
  color: #fff;
}
@media (prefers-color-scheme: dark) {
  .number-input-group .stepper button {
    background: rgba(255,255,255,0.06);
  }
}

/* ═══════════════════════════════════════════════════════════════
   PART 39: INPUT WITH UNIT (Merged from shared.css)
   ═══════════════════════════════════════════════════════════════ */
.input-with-unit {
  position: relative;
  display: flex;
  align-items: center;
}
.input-with-unit input { padding-right: 52px; text-align: right; font-variant-numeric: tabular-nums; }
.input-with-unit .unit {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-light);
  font-size: 0.875rem;
  font-weight: 500;
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
  z-index: 2;
}
/* Stepper + unit combo */
.number-input-group:has(.stepper):has(.unit) input,
.input-with-unit:has(.stepper):has(.unit) input {
  padding-right: 110px !important;
}
.number-input-group:has(.stepper):not(:has(.unit)) input,
.input-with-unit:has(.stepper):not(:has(.unit)) input {
  padding-right: 50px !important;
}
.number-input-group:not(:has(.stepper)):has(.unit) input,
.input-with-unit:not(:has(.stepper)):has(.unit) input {
  padding-right: 68px !important;
}

/* ═══════════════════════════════════════════════════════════════
   PART 40: SEARCH INPUT (Merged from shared.css)
   ═══════════════════════════════════════════════════════════════ */
.search-input {
  position: relative;
}
.search-input i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-light);
  font-size: 15px;
  pointer-events: none;
}
.search-input input { padding-left: 44px; }

/* ═══════════════════════════════════════════════════════════════
   PART 41: DATE INPUT STYLING (Merged from shared.css)
   ═══════════════════════════════════════════════════════════════ */
input[type="date"], input[type="datetime-local"] {
  position: relative;
  cursor: pointer;
  min-height: 44px;
}
input[type="date"]::-webkit-calendar-picker-indicator,
input[type="datetime-local"]::-webkit-calendar-picker-indicator {
  position: absolute;
  right: 8px;
  width: 28px; height: 28px;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
  background: none;
  color: var(--color-primary);
}
input[type="date"]::-webkit-calendar-picker-indicator:hover,
input[type="datetime-local"]::-webkit-calendar-picker-indicator:hover { opacity: 1; }

/* ═══════════════════════════════════════════════════════════════
   PART 42: INPUT VALIDATION STATES (Merged from shared.css)
   ═══════════════════════════════════════════════════════════════ */
input.error, select.error, textarea.error {
  border-color: var(--color-danger) !important;
  background: rgba(255, 59, 48, 0.04) !important;
  box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.10) !important;
}
input.success, select.success, textarea.success {
  border-color: var(--color-success);
  background: var(--color-success-bg);
}
.validation-message.error {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-danger);
  font-size: 0.8125rem;
  margin-top: 6px;
  font-weight: 500;
}
.validation-message.error::before {
  content: '\f06a';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 0.75rem;
}

/* ═══════════════════════════════════════════════════════════════
   PART 43: FORM HELPERS (Merged from shared.css)
   ═══════════════════════════════════════════════════════════════ */
.form-hint, .hint-text, .field-hint {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-top: 4px;
  line-height: 1.45;
}
.form-error {
  font-size: 0.75rem;
  color: var(--color-danger);
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ═══════════════════════════════════════════════════════════════
   PART 44: EXTERNAL LINK INDICATOR (Merged from shared.css)
   ═══════════════════════════════════════════════════════════════ */
.nav-external::after {
  content: '\f08e';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 0.625rem;
  margin-left: auto;
  opacity: 0.35;
  transition: opacity var(--transition-fast);
}
.nav-external:hover::after { opacity: 0.7; }

/* ═══════════════════════════════════════════════════════════════
   PART 45: SKELETON VARIANTS (Merged from shared.css)
   ═══════════════════════════════════════════════════════════════ */
.skeleton-line { height: 12px; margin: 8px 0; }
.skeleton-line.short { width: 60%; }
.skeleton-line.medium { width: 80%; }
.skeleton-block { height: 100px; margin: 12px 0; border-radius: var(--radius-md); }
.skeleton-circle { width: 48px; height: 48px; border-radius: 50%; }

/* ═══════════════════════════════════════════════════════════════
   PART 46: PAGE HEADER TITLE OVERFLOW (Merged from shared.css)
   ═══════════════════════════════════════════════════════════════ */
.page-header-title span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ═══════════════════════════════════════════════════════════════
   PART 47: CARD TOP HIGHLIGHT & ARROW (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.9), transparent);
  pointer-events: none;
  z-index: 2;
}
@media (prefers-color-scheme: dark) {
  .card::after { background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent); }
}
.card.interactive {
  padding-right: 56px;
}
.card.interactive::after {
  display: flex;
  content: '\203A';
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 1.5rem;
  font-weight: 300;
  border-radius: 50%;
  background: rgba(0,0,0,0.03);
  transition: all 250ms cubic-bezier(0.25, 0.1, 0.25, 1);
  z-index: 2;
  pointer-events: none;
  line-height: 1;
}
.card.interactive:hover::after {
  color: #fff;
  background: var(--color-primary);
  transform: translateY(-50%) translateX(3px);
  box-shadow: 0 4px 12px rgba(0,122,255,0.3);
}
@media (prefers-color-scheme: dark) {
  .card.interactive::after { background: rgba(255,255,255,0.06); }
  .card.interactive:hover::after { background: var(--color-primary); color: #fff; }
}
.card.interactive:hover {
  transform: translateY(-4px) scale(1.005);
  border-color: rgba(255,255,255,0.85);
}

/* ═══════════════════════════════════════════════════════════════
   PART 48: TAB INDICATOR (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.tabs-scroll {
  position: relative;
  padding: 4px;
  gap: 2px;
}
.tabs-scroll .tab {
  position: relative;
  z-index: 2;
  padding: 10px 20px;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition:
    color 250ms cubic-bezier(0.25, 0.1, 0.25, 1),
    background-color 250ms cubic-bezier(0.25, 0.1, 0.25, 1),
    box-shadow 250ms cubic-bezier(0.25, 0.1, 0.25, 1);
  border: none;
  /* 按钮元素需显式透明底；不使用 !important，以便悬停/激活态可覆盖 */
  background: transparent;
  font-family: inherit;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}
.tabs-scroll .tab:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
/* ── 激活态 ───────────────────────────────────────────────
   默认沿用 PART 19 的实心药丸样式（background / color / box-shadow）。
   历史问题：早期版本在此处以 !important 强制 background:transparent、
   box-shadow:none，其设计依赖 .tab-indicator 滑动指示器元素；但全站页面
   均未实现该元素，导致激活态与悬停态被静默压制——标签切换后看不出选中。
   现改为：仅当容器确实存在 .tab-indicator 时才启用指示器模式。 */
.tabs-scroll:has(.tab-indicator) .tab.on {
  color: var(--color-text);
  background: transparent;
  box-shadow: none;
}
/* ── 滑动指示器 ────────────────────────────────────────────
   由 common.js initTabIndicators() 动态创建并维护 transform / width。
   历史问题：指示器原为纯白（--color-surface-solid），而 .tabs-scroll 容器
   底色为半透明白玻璃（rgba(255,255,255,.48)），白上白对比度约 1.05:1，
   肉眼几乎不可见 —— 用户感知为「切换标签看不出选中」。
   现改为品牌蓝实心药丸，视觉上与 PART 19 的激活态一致，并保留滑动动效。 */
.tabs-scroll .tab-indicator {
  position: absolute;
  left: 0;
  z-index: 1;
  top: 4px;
  bottom: 4px;
  border-radius: var(--radius-lg);
  background: var(--color-primary);
  box-shadow: var(--shadow-primary-sm), inset 0 1px 0 rgba(255, 255, 255, 0.20);
  transition:
    transform var(--transition-spring),
    width var(--transition-spring);
  pointer-events: none;
}
/* 指示器模式下，激活标签文字反白以保证对比度 */
.tabs-scroll:has(.tab-indicator) .tab.on {
  color: #fff;
  background: transparent;
  box-shadow: none;
}
@media (prefers-color-scheme: dark) {
  .tabs-scroll .tab-indicator {
    background: var(--color-primary);
    box-shadow: var(--shadow-primary-sm), inset 0 1px 0 rgba(255, 255, 255, 0.16);
  }
}
@media (prefers-reduced-motion: reduce) {
  .tabs-scroll .tab-indicator { transition-duration: 0.01ms; }
}

/* ═══════════════════════════════════════════════════════════════
   PART 49: HERO SECTION (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.hero-section, .welcome-section {
  text-align: center;
  padding: 20px 0 32px;
}
.hero-title, .welcome-title {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}
.hero-subtitle, .welcome-subtitle {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.6;
}
@media (max-width: 768px) {
  .hero-title, .welcome-title { font-size: 1.75rem; }
}
@media (max-width: 480px) {
  .hero-title, .welcome-title { font-size: 1.625rem; }
}

/* ═══════════════════════════════════════════════════════════════
   PART 50: SECTION TITLE (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.section-title {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--color-text);
}
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

/* ═══════════════════════════════════════════════════════════════
   PART 51: RESULT AMOUNT DISPLAY (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.result-amount {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
  background: linear-gradient(135deg, var(--color-primary) 0%, #5AC8FA 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 16px 0;
}
.result-label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  font-weight: 500;
  margin-bottom: 4px;
}
@media (max-width: 480px) {
  .result-amount { font-size: 2.25rem; }
}

/* ═══════════════════════════════════════════════════════════════
   PART 52: CONTAINER WIDTH (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.main-container, .container {
  width: 100%;
  max-width: 900px;
}
body:has(.home-grid) .main-container,
body:has(.tools-grid) .main-container,
body.index-page .main-container {
  max-width: 1100px;
}

/* ═══════════════════════════════════════════════════════════════
   PART 53: CARD CONTENT LAYOUT (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.card-title {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
  color: var(--color-text);
}
.card-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}
.card-content {
  display: flex;
  align-items: center;
  gap: 16px;
  position: relative;
  z-index: 1;
}
.card-text {
  flex: 1;
  min-width: 0;
}

/* ═══════════════════════════════════════════════════════════════
   PART 54: UPDATE BANNER (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.update-banner {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  background: var(--glass-bg-strong);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 20px;
  box-shadow: var(--glass-shadow-sm), var(--glass-inner-shadow);
}
.update-banner i { font-size: 0.875rem; }

/* ═══════════════════════════════════════════════════════════════
   PART 55: TOP WARNING BANNER (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.top-warning {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto 20px;
  padding: 14px 18px;
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  border-left: 4px solid var(--color-warning);
  border-radius: var(--radius-md);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  box-shadow: var(--glass-shadow-sm);
}
.top-warning i {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 0.875rem;
  margin-top: 1px;
  color: var(--color-warning);
}
.top-warning p { margin: 0; flex: 1; }
.top-warning strong { color: var(--color-warning); font-weight: 600; }

/* ═══════════════════════════════════════════════════════════════
   PART 56: FORM SECTION HEADERS (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.form-section h2, .card h2, .section-card h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 20px 0;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(0,0,0,0.05);
  color: var(--color-text);
}
.form-section h2 i, .card h2 i, .section-card h2 i {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-primary-bg);
  color: var(--color-primary);
  font-size: 0.9375rem;
  flex-shrink: 0;
}
@media (prefers-color-scheme: dark) {
  .form-section h2, .card h2, .section-card h2 {
    border-bottom-color: rgba(255,255,255,0.06);
  }
}

/* ═══════════════════════════════════════════════════════════════
   PART 57: INFO BADGE (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.info-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

/* ═══════════════════════════════════════════════════════════════
   PART 58: THEME TOGGLE (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
#themeToggle, .theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--glass-shadow-sm), var(--glass-inner-shadow);
  font-size: 1rem;
}
#themeToggle:hover, .theme-toggle:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary);
  transform: rotate(12deg) scale(1.05);
  border-color: var(--color-primary-border);
}

/* ═══════════════════════════════════════════════════════════════
   PART 59: LPR / RATE PILLS (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.lpr-info, .rate-display {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}
.lpr-pill, .rate-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  background: var(--glass-bg-strong);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  box-shadow: var(--glass-shadow-sm), var(--glass-inner-shadow);
  transition: all var(--transition-fast);
}
.lpr-pill:hover, .rate-pill:hover {
  transform: translateY(-2px);
  box-shadow: var(--glass-shadow), var(--glass-inner-shadow);
}
.lpr-pill .rate-label, .rate-pill .rate-label {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.8125rem;
}
.lpr-pill .rate-value, .rate-pill .rate-value {
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--color-primary);
  font-size: 1rem;
}

/* ═══════════════════════════════════════════════════════════════
   PART 60: TOOL / NAV ICONS (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.nav-icon, .tool-icon, .card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.375rem;
  flex-shrink: 0;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.5), 0 2px 8px rgba(0,0,0,0.06);
  transition: transform var(--transition-fast);
}
.card.interactive:hover .nav-icon,
.card.interactive:hover .tool-icon,
.card.interactive:hover .card-icon {
  transform: scale(1.08);
}
@media (max-width: 768px) {
  .nav-icon, .tool-icon, .card-icon { width: 46px; height: 46px; font-size: 1.25rem; }
}

/* ═══════════════════════════════════════════════════════════════
   PART 61: FILTER TAGS (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.filter-tag, .tag, .nav-tag {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-fast);
}
.filter-tag.active {
  box-shadow: 0 2px 8px rgba(0,122,255,0.25);
}

/* ═══════════════════════════════════════════════════════════════
   PART 62: LAWYER NAV SPECIFIC (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.site-card:has(.card-official-tag.show) .card-name {
  padding-top: 22px;
}
.card-official-tag.show {
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
.card-hot-tag {
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
.card-fav {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-spring);
}
.card-fav:hover {
  transform: scale(1.1);
}

/* ═══════════════════════════════════════════════════════════════
   PART 63: BRAND TEXT & GRID LAYOUTS (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.brand-text, .logo-text {
  white-space: nowrap !important;
}
.home-grid, .tools-grid, .nav-grid {
  gap: 16px;
}

/* ═══════════════════════════════════════════════════════════════
   PART 64: INFO / ALERT BOXES (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.lpr-info, .info-box, .alert-info, .alert {
  margin-top: 16px;
  padding: 16px 20px;
  background: var(--glass-bg-weak);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  position: relative;
  overflow: hidden;
  box-shadow: var(--glass-shadow-sm);
}
.lpr-info::before, .info-box::before, .alert-info::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--color-primary);
  border-radius: 4px 0 0 4px;
}
.lpr-info i, .info-box i, .alert-info i {
  color: var(--color-primary);
}

/* ═══════════════════════════════════════════════════════════════
   PART 65: RESULT SECTION TOP HIGHLIGHT (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.result-section::after {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.8), transparent);
  pointer-events: none;
  z-index: 2;
}

/* ═══════════════════════════════════════════════════════════════
   PART 66: NOTICE LEFT BORDER COLOR VARIANTS (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.disclaimer::before, .notice::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  border-radius: 4px 0 0 4px;
}
.disclaimer, .notice { border-left: none; }
.disclaimer::before, .notice:not(.notice-info):not(.notice-danger):not(.notice-success)::before { background: var(--color-warning); }
.notice-info::before { background: var(--color-primary); }
.notice-danger::before { background: var(--color-danger); }
.notice-success::before { background: var(--color-success); }
.disclaimer i, .notice:not(.notice-info):not(.notice-danger):not(.notice-success) i { color: var(--color-warning); }
.notice-info i { color: var(--color-primary); }
.notice-danger i { color: var(--color-danger); }
.notice-success i { color: var(--color-success); }
.disclaimer, .notice, .top-warning {
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  padding: 14px 18px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.875rem;
  line-height: 1.6;
  box-shadow: var(--glass-shadow-sm);
}
.disclaimer i, .notice i, .top-warning i {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 0.875rem;
  margin-top: 1px;
}

/* ═══════════════════════════════════════════════════════════════
   PART 67: PLACEHOLDER STYLING (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
input::placeholder, textarea::placeholder {
  color: var(--color-text-light);
  font-weight: 400;
  opacity: 0.8;
}

/* ═══════════════════════════════════════════════════════════════
   PART 68: LINK ACTIVE STATE (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
a:active { opacity: 0.7; }

/* ═══════════════════════════════════════════════════════════════
   PART 69: FORM GROUP SPACING (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.form-group { margin-bottom: 22px; }
.form-group:last-child, .form-row:last-child { margin-bottom: 0; }

/* ═══════════════════════════════════════════════════════════════
   PART 70: BUTTON ACTIVE STATE (Merged from shared-pro.css)
   ═══════════════════════════════════════════════════════════════ */
.btn:not(:disabled):active,
.btn-secondary:not(:disabled):active {
  transform: scale(0.97) translateY(0);
  transition-duration: 80ms;
}

/* ═══════════════════════════════════════════════════════════════
   PART 71: SCALE TOKENS — 层级 / 触控 / 字号阶梯
   用途：为 z-index、最小触控目标、字号提供统一取值，避免各页各写一套。
   ═══════════════════════════════════════════════════════════════ */
:root {
  /* ── z-index 层级尺度（由低到高，勿越级使用） ────────────── */
  --z-base: 0;          /* 普通内容 */
  --z-raised: 1;        /* 卡片内层内容（用于遮盖卡片伪元素背景） */
  --z-sticky: 100;      /* 吸顶页头 */
  --z-float: 500;       /* 悬浮按钮（回到顶部等） */
  --z-dropdown: 900;    /* 下拉 / 气泡 */
  --z-overlay: 1000;    /* 遮罩层 */
  --z-modal: 1001;      /* 模态框 */
  --z-toast: 1200;      /* 轻提示 */
  --z-tooltip: 1300;    /* 工具提示 */
  --z-skip: 1400;       /* 跳转链接（无障碍，须置顶） */

  /* ── 最小触控目标（Apple HIG 44pt；WCAG 2.2 AA 下限 24px） ── */
  --touch-target: 44px;
  --touch-target-sm: 32px;

  /* ── 字号阶梯（下限 11px，低于此值可读性不达标） ─────────── */
  --text-2xs: 0.6875rem;  /* 11px  — 徽章/角标最小可用字号 */
  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.8125rem;   /* 13px */
  --text-base: 0.875rem;  /* 14px */
  --text-md: 1rem;        /* 16px — 表单输入下限，可避免 iOS 自动缩放 */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.25rem;     /* 20px */
  --text-2xl: 1.5rem;     /* 24px */
  --text-3xl: 1.875rem;   /* 30px */
}

/* ═══════════════════════════════════════════════════════════════
   PART 72: RECOVERED COMPONENTS
   背景：shared-liquid-glass.css 与 apple-polish.css 未被任何页面加载，
   但其定义的若干类被 liquid-interactions.js 与各页面实际使用，导致这些
   组件以「浏览器默认样式」渲染（如回到顶部按钮渲染为默认灰底方块、静态定位）。
   本 PART 将这些组件统一定位并迁移至现行令牌命名空间后重新提供。
   ═══════════════════════════════════════════════════════════════ */

/* ── 回到顶部（悬浮玻璃圆钮） ──────────────────────────────── */
.back-to-top,
.scroll-top-btn {
  position: fixed;
  right: 24px;
  bottom: calc(env(safe-area-inset-bottom, 0px) + 24px);
  width: var(--touch-target);
  height: var(--touch-target);
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--glass-bg-strong);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-lg), var(--glass-inner-shadow);
  color: var(--color-text);
  cursor: pointer;
  z-index: var(--z-float);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px) scale(0.9);
  transition:
    opacity var(--transition-smooth),
    visibility var(--transition-smooth),
    transform var(--transition-spring),
    box-shadow var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast);
}
.back-to-top.visible,
.scroll-top-btn.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}
.back-to-top:hover,
.scroll-top-btn:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary-border);
  color: var(--color-primary);
}
.back-to-top:active,
.scroll-top-btn:active { transform: scale(0.93); }
.back-to-top:focus-visible,
.scroll-top-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}
.back-to-top svg,
.scroll-top-btn svg { width: 20px; height: 20px; }
@media (max-width: 768px) {
  .back-to-top,
  .scroll-top-btn {
    right: 16px;
    bottom: calc(env(safe-area-inset-bottom, 0px) + 16px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .back-to-top,
  .scroll-top-btn { transition-duration: 0.01ms; transform: none; }
}

/* ── 背景光球：显式停用 ──────────────────────────────────────
   由 liquid-interactions.js 动态创建，原样式在未加载样式表中，
   实际以 0×0 不可见形态存在。设计系统的 body::before / body::after
   背景画布已提供等效且性能更优的渐变光晕，故停用这些冗余元素，
   同时免除其滚动视差带来的无谓计算。 */
.bg-orb { display: none !important; }

/* ── 按钮加载态（配合 liquid-interactions.js setButtonLoading） ── */
.btn .spinner,
.btn-secondary .spinner {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.btn-secondary .spinner {
  border-color: rgba(0, 0, 0, 0.15);
  border-top-color: var(--color-primary);
}
.btn.is-loading { pointer-events: none; }
.btn.is-loading .btn-text { opacity: 0; }
.btn.is-loading .spinner { position: absolute; }
@media (prefers-reduced-motion: reduce) {
  .btn .spinner,
  .btn-secondary .spinner { animation-duration: 1.6s; }
}

/* ── 按钮文本包裹层 ────────────────────────────────────────── */
.btn-text {
  display: inline-block;
  transition: opacity var(--transition-fast);
}

/* ── 水波纹反馈 ────────────────────────────────────────────── */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  transform: scale(0);
  animation: ripple 600ms var(--transition-spring) forwards;
  pointer-events: none;
  will-change: transform, opacity;
}

/* ── 轻提示图标 ────────────────────────────────────────────── */
.toast-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

/* ── 滑动指示器（分段控件 / 标签页） ───────────────────────── */
.segment-indicator,
.tabs-indicator {
  position: absolute;
  top: 3px;
  bottom: 3px;
  background: var(--color-surface-solid);
  border-radius: calc(var(--radius-md) - 3px);
  box-shadow: var(--shadow-xs);
  transition:
    transform var(--transition-spring),
    width var(--transition-spring);
  pointer-events: none;
  z-index: var(--z-base);
}
.tabs-indicator {
  top: 4px;
  bottom: 4px;
  border-radius: var(--radius-sm);
}

/* ── 数字变化强调动画 ──────────────────────────────────────── */
.num-pop { animation: scaleIn 400ms var(--transition-spring); }

/* ── 布局容器基线 ──────────────────────────────────────────
   首页等页面自带更完整的玻璃外壳样式（文档后序、同特异性优先），
   此处仅为「使用了该类但未定义样式」的页面提供一致兜底。 */
.app-container,
.main-content {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

/* ═══════════════════════════════════════════════════════════════
   PART 73: TOUCH TARGET ENFORCEMENT
   触控设备下将可交互元素提升至 Apple HIG 建议的 44px 最小目标，
   并修正若干明确小于 WCAG 2.2 AA 下限（24px）的控件。
   ═══════════════════════════════════════════════════════════════ */

/* ── 数字步进器 ────────────────────────────────────────────
   原为纵向双键，每个仅约 19–20px 高，低于 WCAG 2.2 AA 的 24×24 下限；
   且纵向排列受输入框高度约束，在不增高输入框的前提下无法达标。
   现统一改为横向并排 [−][+]，每个按键 34×34（触控 38×38），
   并将单位标签左移至步进器之前，避免两者重叠。 */
.number-input-group .stepper {
  flex-direction: row;
  width: auto;
  height: auto;
  gap: 4px;
}
.number-input-group .stepper button {
  width: 34px;
  height: 34px;
  flex: none;
  font-size: 12px;
  border-radius: var(--radius-xs);
}
/* 单位标签让位于横向步进器（步进器占右侧约 78px）。
   注意：多个页面为适配「旧的 36px 宽纵向步进器」而各自硬编码了
   .number-input-group.input-with-unit .unit{right:52px}（特异性 0,3,0 且文档后序），
   故此处使用 0,4,0 选择器在设计系统层统一覆盖，避免逐页散落同一数值。 */
.number-input-group.input-with-unit:has(.stepper) .unit,
.input-with-unit.number-input-group:has(.stepper) .unit,
.number-input-group:has(.stepper) .unit,
.input-with-unit:has(.stepper) .unit { right: 84px; }
/* 输入区右侧留白：步进器 78px + 单位约 34px + 间距 */
.number-input-group:has(.stepper):has(.unit) input,
.input-with-unit:has(.stepper):has(.unit) input { padding-right: 124px !important; }
.number-input-group:has(.stepper):not(:has(.unit)) input,
.input-with-unit:has(.stepper):not(:has(.unit)) input { padding-right: 88px !important; }

@media (pointer: coarse) {
  .number-input-group .stepper button {
    width: 38px;
    height: 38px;
    font-size: 13px;
  }
  .number-input-group.input-with-unit:has(.stepper) .unit,
  .input-with-unit.number-input-group:has(.stepper) .unit,
  .number-input-group:has(.stepper) .unit,
  .input-with-unit:has(.stepper) .unit { right: 92px; }
  .number-input-group:has(.stepper):has(.unit) input,
  .input-with-unit:has(.stepper):has(.unit) input { padding-right: 138px !important; }
  .number-input-group:has(.stepper):not(:has(.unit)) input,
  .input-with-unit:has(.stepper):not(:has(.unit)) input { padding-right: 100px !important; }
}

/* 小尺寸图标类按钮：先保证任何指针类型下都不低于 WCAG 2.2 AA 的 24×24 下限。
   这些控件在页面 CSS 中被显式设置了过小的宽高（如 .ds-del 22×14、
   .date-clear-btn 22×22），此处以 min-* 兜底——min-* 优先于 width/height。
   同时改为 flex 居中，避免放大后图标偏离中心（原实现依赖固定 line-height）。 */
.theme-toggle,
.date-clear-btn,
.date-quick-chip,
.ds-del,
.ldf-close,
.modal-close,
.detail-toggle {
  min-width: 24px;
  min-height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* 触控设备下进一步提升至 32px（更接近 Apple HIG 的 44pt 建议） */
@media (pointer: coarse) {
  .theme-toggle,
  .date-clear-btn,
  .date-quick-chip,
  .ds-del,
  .ldf-close,
  .modal-close,
  .detail-toggle {
    min-width: var(--touch-target-sm);
    min-height: var(--touch-target-sm);
  }
}

/* 页脚备案链接：增加纵向内边距以扩大可点区域（不改变视觉字号） */
.beian-link {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 8px 2px;
}

/* 功能性链接（带 onclick 或 role=button）：原尺寸常小至 16px 高，低于 WCAG 2.2 AA
   的 24×24 下限。行内元素的纵向 padding 不会撑高行盒，因此加内边距即可扩大点击区
   而不产生任何视觉位移；横向以等量负 margin 抵消，保持文本位置不变。
   仅作用于功能性链接，正文中的普通文本链接不受影响（避免破坏正文排版）。 */
a[onclick],
a[role="button"] {
  padding: 5px 3px;
  margin: 0 -3px;
}